I'm using a Canon T1i and I have the Canon 50mm f/1.8 ("nifty fifty") lens and it's great, but it has too much a zoom factor for indoors shooting.

Because of the APS-C sensor crop factor (1.6x), I need a
32mm lens to achieve the same size on my camera.

Does anybody have any recommendations on a prime lens that size?

The most ideal lens is the Canon EF 35mm f/1.4L USM but that is very, very far out of my price range.

Sigma seems to have some lenses in my price range (under $400) but I'm really not sure the quality of them. Everybody talks about how great the Canon 50mm prime is that I'm a bit disappointed I can't use it very often because of my camera's crop factor.